Adjustable clamp for supporting a railway rail



FIG. 1 is a top plan view of an adjustable clamp for supporting a railway rail showing my new design.

FIG. 2 is a bottom plan view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a right side elevational view thereof. 

The ornamental design for an adjustable clamp for supporting a railway rail, as shown and described. 